<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>关于我们</title>
    <style type="text/css">

        *{
            margin:0;
            padding: 0;
        }
        .main{
           max-width: 1100px;
            margin: 0 auto;
        }
        .box{
            width: auto;
            height: auto;
            margin: 0 auto;
        }
        .demo{
            width: 80px;
            height: 80px;
            border-radius: 40px;
            border-top-right-radius: 0;
            dis
        }
    </style>
</head>
<body>

</body>
</html>